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Product Code M2220A2-100mg
Price $270
Excluding VAT

5TCzBN, light-blue TADF fluorescence emitter

High-purity (>99.0%) and available online for priority dispatch, CAS No. 1469700-26-2, 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile, TADF blue dopant


5TCzBN is another sky-blue emitter from the cabzolyl benzonitrile (CBN) family that is used in TADF-OLED devices with great performance.

Acting as an encapsulation shell to the luminophore in 5TCzBN, tert-butyl units are believed to reduce the singlet–triplet splitting (ΔEST) of the compounds, which gives rise to a more efficient reverse intersystem crossing (RISC) process by effectively separating the neighbouring molecules.

General Information


CAS number 1469700-26-2
Full name 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile
Chemical formula C107H120N6
Molecular weight 1490.13 g/mol
Absorption* λmax 420 nm in toluene
Fluorescence λem 480 nm in toluene
HOMO/LUMO HOMO = 5.75 eV, LUMO = 2.74 eV, T1 = 2.60 eV [1]
Classification / Family Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials

* Measurable with an optical spectrometer

Product Details


Purity Sublimed* >99.0% (1H NMR)
Melting point Tg = 325 °C (lit.)
Appearance Yellow powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.

Chemical Structure


1469700-26-2, 5tczbn
Chemical Structure of 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile (5TCzBN), CAS 1469700-26-2.

Device Structure(s)


Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5TCzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour Sky-blue blue light emitting device
Max. EQE 21.2%
Max. Power Efficiency 56.1 Im/W
Device structure ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/30 wt% 5TCzBN: DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [3]
Colour Blue blue light emitting device
Max. EQE 19.2%
Max. Power Efficiency 33.8 Im/W
Device structure ITO/HATCN/NPB (30 nm)/TCTA (10 nm)/5TCzBN: mCBP (30 nm)/DPyPA:Liq (1:1, 30 nm)/Al/LiF (0.5 nm) [4]
Colour Blue blue light emitting device
Max. EQE 21.3%
Half-life Time 12,873h @ 100cd/m2

*For chemical structure information, please refer to the cited references.

MSDS Documentation


5TCzBN MSDS5TCzBN MSDS sheet

Literature and Reviews


  1. Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
  2. Highly efficient and stable blue thermally activated delayed fluorescence emitters, D. Zhang et al., SPIE (2016); DIO: 10.1117/2.1201611.006797.
  3. Perspective on carbazole-based organic compounds as emitters and hosts in TADF applications, B. Wex et al., J. Mater. Chem. C, 5, 8622 (2017); DOI: 10.1039/c7tc02156a.

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